2 reasons for this - one is an error in the code, the other is that its likely you created some tweaks and you need to update them to the new format as shown in the first post. I'll post a fix for this, but if you update your tweaks and restart it should work.

Your plugin rocks. Just ran the first test using 1.1. Only two Calibre-managed books didn't go into collections. My usual "problem files" processed fine. (The Kindle dictionaries and Active Content files aren't managed by Calibre so for this test they don't count.) Yay!

Affected books were _The Beautiful and Damned_ and _Against the Tide_. TB&D came from MobileRead and AtT came from Baen, so not sure what the issue is. I will look into it some more, and also run a few more tests using special characters and see what happens. I just wanted to post this to let you know that this is working amazingly well for me.

I didn't want to use the "series" bit, but for some reason, deleting that part messed up the tweak and I got an error message. In the end, I just upped the number of books to include in any given series to a large number like 500. Now my collections are made just from my Calibre tags. So far, it's working great! Thanks so much for this!

Ran another test using tags. I have a few "administrative" tags I don't want collections for, so I added "nocollect" to the end of those tag names. Also added Clippings file to Calibre for management. Tweaks as follows:

Collections were created for all tags except those I added to the ignore option. Everything went in except for the Active Content and Kindle dictionaries and now I remember what the issue is with managing those - Active Content files and the dictionaries don't live in the Kindle Documents folder.

Your plugin has been a fantastic success for me. I haven't tried testing special characters to use as a sorting prefix yet, it will have to wait till tomorrow.

genre is a user-created custom column, setup is text, like tag column. I've tried the look-up name with & without the # - genre,#genre. get an invalid tweak. also tried a different custom column, read_status, same result in tweak.

using calibre 7.43

fyi, all but apps & a handful of Baen books (looks like they just need their mobi format file updated from the error message) went into collections - best results I've had with any kindle collection manager so far (have about 3500 files on the k3). I love the simplicity of this app & that fact that I can use it as I work with calibre.

Appreciate all the testing - and the feedback. Good to see its going in the right direction

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Affected books were _The Beautiful and Damned_ and _Against the Tide_. TB&D came from MobileRead and AtT came from Baen

I'll download those and try them.

Quote:

Everything went in except for the Active Content and Kindle dictionaries and now I remember what the issue is with managing those - Active Content files and the dictionaries don't live in the Kindle Documents folder.

Exactly. I was able to add My Clippings to a collection, but not the others. Not really an issue to have a few at the end of the Collections list - but it is annoying. I'll have to test adding them to a collection manually to see what happens.

I had the same issue. I guess the header is corrupt or in a format the code can't understand. I just ran a convert Mobi to Mobi on the file in Calibre and resent it to the device and the plugin no longer gives me a warning and it shows up in a collection.

I assume you got a Warning dialog stating that the Mobi format was corrupt when running the plugin?